I play this when I have nothing better to do and I love it. It's satisfying once you have gotten onto the hardest difficulty and are actually able to play well. If you like rhythm games you might as well try it out since it's free. The community page has some nice additional songs to play around with if you get bored of the ones they have. Speaking of the songs, they are all really good and I truly love listening to their originals as well as the ones selected from small (but talented) artists.